Samsung AM JXVAF Series Installation Manual page 42

Refrigerant pipe installation
Example of refrigerant calculation for HP models
Size of liquid pipe
Classification
[mm (inch)]
Ø6.35 (Ø1/4)
Liquid pipe (ⓐ) Ø9.52 (Ø3/8)
Ø12.70 (Ø1/2)
Model name of
Classification
indoor unit
4way cassette
(AM018FN4DCH)
Slim duct
(AM024FNLDCH)
Indoor unit (ⓑ)
Slim duct
(AM012FNLDCH)
1way cassette
(AM012FN1DCH)
- Total amount of refrigerant (ⓐ+ⓑ) = 5.575 + 3.30 = 8.875 (kg)
Temper grade and minimum thickness of the refrigerant pipe
Outer diameter
mm
6.35
9.52
12.70
15.88
19.05
22.22
25.40
28.58
31.75
34.92
38.10
41.28
44.45
50.80
53.98
For pipes larger than Ø 3/4" (Ø 19.05mm), drawn type (C1220T-1/2H or C1220T-H) type copper pipe must be
used. If a annealed type (C1220T-O) copper pipe is used, pipe may break due to its low pressure resistance and
CAUTION
cause personal injury.
42
Length [m (ft)]
①
35 (114.8)
50 (164.0)
15 (49.2)
Number of units
①
4
2
1
1
= 12.19 + 7.26 = 19.45 (lb)
Minimum thickness
inch mm
1/4 0.70
3/8 0.70
1/2 0.80
5/8 1.00
3/4 0.90
7/8 0.90
1 1.00
1 1/8 1.10
1 1/4 1.10
1 3/8 1.21
1 1/2 1.35
1 5/8 1.43
1 3/4 1.60
2 2.00
2 1/8 2.10
Unit amount of Amount of
refrigerant [kg/m additional
(lb/ft)] refrigerant [kg (lb)]
②
0.02 (0.013)
0.06 (0.040)
0.125 (0.084) 1.875 (4.13)
Unit amount of Amount of
refrigerant [kg/EA additional
(lb/EA)] refrigerant [kg (lb)]
②
0.45 (0.99)
0.45 (0.99)
0.35 (0.77)
0.25 (0.55)
inch
0.028
0.028
0.031
0.039
0.035
0.035
0.039
0.043
0.043
0.048
0.053
0.056
0.063
0.079
0.083
Total amount
of additional
refrigerant [kg (lb)]
①×② ∑(①×②)
0.7 (1.49)
3.0 (6.56) 5.575 (12.19)
Total amount
of additional
refrigerant [kg (lb)]
①×②
∑(①×②)
1.8 (3.96)
0.90 (1.98)
ⓑ 3.30 (7.26)
0.35 (0.77)
0.25 (0.55)
Temper grade
Annealed
Drawn